Labels:text | screenshot | rectangle | parallel OCR: DELAY FOR RECEIVING MAIL FROM EXCHANGE SERVER 250 200 150 100 (x10.000000) 50 Number of observations 0 2 4 6 10 $12 Delay (sec) Figure 4. This graph shows the simulated performance of Exchange over a T-1 link. In this instance, the transaction of inter- est was mail retrieval. To obtain these results, we assumed that each user would send 10 messages a day and that 10 percent of those messages would have IMB attachments.